#include<stdio.h>
int main()
{
	int a,b,c,t;
	scanf("%d%d%d",&a,&b,&c);
	if(a>b)
	{
		t=a;
		a=b;
		b=t;
	}
	if(c<b)
	{
		t=c;
		c=b;
		b=t;
	}
	printf("%d->%d->%d\n",a,b,c);
	return 0;

}